KR960006559A - Video / Audio Signal Input Selection Circuit - Google Patents

Video / Audio Signal Input Selection Circuit Download PDF

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Publication number
KR960006559A
KR960006559A KR1019940017826A KR19940017826A KR960006559A KR 960006559 A KR960006559 A KR 960006559A KR 1019940017826 A KR1019940017826 A KR 1019940017826A KR 19940017826 A KR19940017826 A KR 19940017826A KR 960006559 A KR960006559 A KR 960006559A
Authority
KR
South Korea
Prior art keywords
video
audio signal
signal input
switching
signal
Prior art date
Application number
KR1019940017826A
Other languages
Korean (ko)
Inventor
이인규
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940017826A priority Critical patent/KR960006559A/en
Publication of KR960006559A publication Critical patent/KR960006559A/en

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Abstract

본 발명은 비디오 카세트 레코우더(Video Cassette Rercorder) 및 레이져 디스크 플레이어(Lazer Disc Player) 등을 연결하여 사용하는 텔레비젼 수상기(Television Receiver)에 관한 것으로서, 더욱 상세하게는 텔레비젼 수상기에 유입되는 비디오/오디오 신호(Video/Audio Signal)의 입력잭(Input Jack)의 삽입상태를 판단하여 비디오/오디오 신호 입력을 화면과 스피커로 선택적으로 출력시킬 수 있도록 한 비디오/오디오 신호 선택 회로에 관한 것으로, 종래에는 텔레비젼 수상기의 비디오/오디오 신호 입력잭에 외부기기의 비디오/오디오 신호 출력 플러그가 오삽입되면 화면과 스피커로 잡음이 출력되는 문제점이 있었다. 본 발명은 예시도면 제2도에서와 같이 TV/VCR 절환용 스위칭 IC(14)(28)를 통하여 입력되는 비디오/오디오신호를 동기신호 검출부(16)의 동기신호 검출상태를 인식한 마이콤(20)의 제어로 스위칭 IC(30)를 스위칭 동작시켜 화면(18)과 스피커(36)로 선택적으로 출력시킬 수 있도록 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver used by connecting a video cassette recorder and a laser disc player, and more particularly, video / audio flowing into a television receiver. The present invention relates to a video / audio signal selection circuit for judging an insertion state of an input jack of a video / audio signal and selectively outputting a video / audio signal input to a screen and a speaker. When a video / audio signal output plug of an external device is inserted into a video / audio signal input jack of a receiver, noise is output to a screen and a speaker. According to the present invention, as shown in FIG. 2, the microcomputer 20 that recognizes the sync signal detection state of the sync signal detector 16 is a video / audio signal input through the switching ICs 14 and 28 for TV / VCR switching. By switching the switching IC (30) by the control of) to be selectively output to the screen 18 and the speaker 36.

Description

비디오/오디오 신호 입력 선택회로Video / Audio Signal Input Selection Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (1)

텔레비젼 수상기의 케이스의 내부에 구성된 IF신호 입력단과 외부기기 신호 입력단으로 입력되는 비디오 신호를 선택하는 복합 비디오신호 입력절환부와 IF신호 입력단과 외부기기 신호 입력단으로 입력되는 오디오신호를 선택하는 복합 오디오신호 입력절환부와, 상기 복합 비디오/오디오신호 입력절환부의 비디오/오디오신호를 텔레비젼수상기로 출력하기 위하여 TV/VCR 모드를 선택하는 TV/VCR 절환용 스위칭 IC(14)(28)가 구성된 텔레비젼 수상기에 있어서, 상기 TV/VCR 절환용 스위칭 IC(14)를 통하여 비디오신호 입력단(12)으로 입력되는 비디오신호로부터 동기신호를 검출하는 동기신호 검출부(16)와, 상기 동기신호 검출부(16)의 동기신호 검출여부에 따라 스위칭 제어신호를 발생시킴과 아울러 화면(18)으로 잭의 오삽입 상태를 디스플레이하는 마이콤(20)과, 상기 마이콤(20)의 제어로 스위칭 동작하여 비디오 신호 입력단(12)의 비디오신호를 비디오신호 처리부(24), 비디오신호용 앰프(22)를 화면(18)으로 출력하고 오디오 신호 입력단(26)의 오디오 신호를 오디오 신호처리부(32), 오디오신호용 엠프(38)를 통하여 스피커(36)로 출력하는 스위칭 IC(30)를 포함하여 구성되어 짐을 특징으로 하는 비디오/오디오신호 입력선택회로.A composite video signal input switch for selecting a video signal input to an IF signal input terminal and an external device signal input terminal configured inside the case of a television receiver, and a composite audio signal for selecting an audio signal input to an IF signal input terminal and an external device signal input terminal. A television receiver comprising an input switching unit and TV / VCR switching switching ICs 14 and 28 for selecting a TV / VCR mode for outputting a video / audio signal of the composite video / audio signal input switching unit to a television receiver. A synchronization signal detection unit 16 for detecting a synchronization signal from a video signal input to the video signal input terminal 12 through the TV / VCR switching switching IC 14 and a synchronization signal of the synchronization signal detection unit 16. The microcomputer 20 for generating a switching control signal according to the detection and displaying the jack insertion state on the screen 18 and Switching operation under the control of the microcomputer 20 outputs the video signal from the video signal input terminal 12 to the video signal processor 24 and the video signal amplifier 22 to the screen 18. And a switching IC (30) for outputting an audio signal to the speaker (36) through an audio signal processor (32) and an audio signal amplifier (38). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940017826A 1994-07-23 1994-07-23 Video / Audio Signal Input Selection Circuit KR960006559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940017826A KR960006559A (en) 1994-07-23 1994-07-23 Video / Audio Signal Input Selection Circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940017826A KR960006559A (en) 1994-07-23 1994-07-23 Video / Audio Signal Input Selection Circuit

Publications (1)

Publication Number Publication Date
KR960006559A true KR960006559A (en) 1996-02-23

Family

ID=66689501

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940017826A KR960006559A (en) 1994-07-23 1994-07-23 Video / Audio Signal Input Selection Circuit

Country Status (1)

Country Link
KR (1) KR960006559A (en)

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